struts2 session用法
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
//struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="struts-default">
<action name="login" class="Login">
<result>success.jsp</result>
</action>
</package>
</struts>
//Login.java
import java.io.UnsupportedEncodingException;
import java.util.Map;
import org.apache.struts2.interceptor.SessionAware;
import com.opensymphony.xwork2.ActionSupport;
public class Login extends ActionSupport implements SessionAware {
private Map session;
private String username;
private String password;
public void setSession(Map session) {
this.session=session;
}
public String execute(){
User user=User.createUser(username, password);
session.put("msg", user);
return SUCCESS;
}
public String getUsername() {
return username;
}
public void setUsername(String str) throws UnsupportedEncodingException {
username = new String(str.getBytes("ISO-8859-1"),"GBK");
System.out.println(username);
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
//User.java
public class User {
public User(){}
public User(String name,String password){
this.name=name;
this.password=password;
}
public static User createUser(String name,String password){
return new User(name,password);
}
private String name;
private String password;
public String getName(){
return this.name;
}
}
//index.jsp
<%@ page contentType="text/html;charset=gb2312"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Login</title>
</head>
<body>
<s:form action="login">
<s:textfield label="用户名" name="username"></s:textfield>
<s:password label="密 码" name="password"/>
<s:submit value="提交"></s:submit>
</s:form><br>
</body>
</html>
//success.jsp
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>Hello World!</title>
</head>
<body>
<h2>
<s:property value="message" escape="false"/>
<br>Message from session: <s:property value="#session.msg"/>
</h2>
</body>
</html>
